rust/tests/ui/impl-trait/basic-trait-impl.rs
2025-06-30 11:50:19 +05:00

32 lines
648 B
Rust

//! Test basic trait implementation syntax for both simple and generic types.
//@ run-pass
use std::fmt;
struct Thingy {
x: isize,
y: isize,
}
impl fmt::Debug for Thingy {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{{ x: {:?}, y: {:?} }}", self.x, self.y)
}
}
struct PolymorphicThingy<T> {
x: T,
}
impl<T: fmt::Debug> fmt::Debug for PolymorphicThingy<T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{:?}", self.x)
}
}
pub fn main() {
println!("{:?}", Thingy { x: 1, y: 2 });
println!("{:?}", PolymorphicThingy { x: Thingy { x: 1, y: 2 } });
}